Pompey moved to within a single point of the automatic promotion places with victory at Fleetwood.
John Marquis struck the only goal of the game in the first half by heading home a fine Ryan Williams cross.
Williams and Michael Jacobs had chances to extend the lead, while Kenny Jackett's side had few problems to deal with at the other end.
Fans can watch the key moments (top video) or register with iFollow for extended highlights (middle video) and a full match replay (bottom video).